An electron-positron system is in n=2 state. (a) Find the ionization energy (energy required to free the electron off the hold of positron) and the radius of the orbit. Interpret this radius in the context of the electron-positron system. (b) Compare the radius found in above with an estimate coming from uncertainty principle. (c) Find the wavelength of the photon emitted when the system decays to its ground state.

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An electron-positron system is in n=2 state.

(a) Find the ionization energy (energy required to free the electron off the hold of positron) and the radius of the orbit. Interpret this radius in the context of the electron-positron system.

(b) Compare the radius found in above with an estimate coming from uncertainty principle.

(c) Find the wavelength of the photon emitted when the system decays to its ground state.

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